Bicycle



FIG. 1 is a side elevational view of a bicycle showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof, and

FIG. 5 is a side elevational view thereof opposite to that shown in FIG. 1. 

The ornamental design for a bicycle, as shown. 